U.S. Patent Specifications

Jet propelled apparatus comprising a combustion chamber, a casing surrounding the side wall of said chamber and enclosing a jacket space, means to supply liquid fuel to said jacket space, an annular collecting member at the rear end of said side wall to which said liquid fuel is delivered from said jacket space, a second and distributing annular member adjacent said first annular member and having spray openings to said chamber, a connexion between said two annular members, and a shut‐off valve in said connection.